Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Evaluate the improper integral or state that it is divergent.
A. 2.6667 B. 1.6667 C. Divergent D. 1.3333
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Express the fraction or mixed number as a percent.
A. 120% B. 15% C. 150% D. 125%
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Simplify the exponential expression. Assume that variables represent nonzero real numbers.33 ? 5
A. 45 B. 135 C. 3375 D. 32
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Solve the problem.A race track is in the shape of an ellipse 80 feet long and 60 feet wide. What is the width 32 feet from the center?
Fill in the blank(s) with the appropriate word(s).
Mathematics